Mayor Bill de Blasio earned $165,000 as public advocate last year and brought in an additional $52,000 in rent on a second home he owns in Park Slope, according to his 2013 tax returns.

The federal and state filings, released by his aides on Tuesday afternoon, show de Blasio and his wife, Chirlane McCray, reported receiving $52,000 in rent last year on the property where his mother lived before her death.

Despite their earnings, they reported taking a $6,493 loss on the home, because they paid $28,758 in mortgage and said the home depreciated by $21,547, according to tax code.

As a candidate for office last year, de Blasio did not report rental income to the city Conflicts of Interest Board for the second home, which is down the street from his primary residence, because he reports a loss on the house. The board does not require disclosure for landlords who do not earn income.

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After deductions, the couple paid $25,633 in city, state and federal income taxes and $2,002 in property taxes on their Park Slope row house.

(De Blasio pays far less in real estate taxes than Brooklynites in some poorer areas of the city because of several quirks in the city's property-tax structure.)

The mayor donated $5,597 to charity last year, which his staff said went to the Brooklyn Food Coalition, the Red Hook Initiative, a local nonprofit called UpBeatNYC, and several churches.

The mayor now makes $225,000 a year, and his wife serves in an unpaid role as chair of the Mayor's Fund to Advance New York City. On their tax returns she is listed as a writer, though she did not earn income last year.